## The attitude control of a satellite in an elliptic orbit |

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### Contents

INTRODUCTION | 1 |

B Pontryagins Maximum Principle | 25 |

PITCH ATTITUDE CONTROL | 31 |

5 other sections not shown

### Common terms and phrases

adjoint analog computer angular momentum angular velocity approximately attitude control attitude control system attitude errors axes axis behavior best value center of mass Chapter coefficient Cold-gas jets CONTROL ON CONTROL control torques Controlled Motion cost functional earth eccentricity of 0.1 elliptic orbit error magnitude Euler Angles Euler's equations forcing function forcing term fuel consumption gas jets gravity gradient torque inertia parameter inertia properties initial conditions initial error large errors linearized equations Mathieu equation minimum-fuel moment-of-inertia nonlinear attitude equations optimal control OPTIMAL COST orbital eccentricity orbital period parabola system phase plane phase-plane trajectories pitch control system pitch motion Pontryagin's Maximum Principle RADS reaction wheel Reverse-Time Optimal Trajectories roll control system roll equation roll error satellite configuration satellite shapes sector system shown in Figure simplified small eccentricity stability steady-state control suboptimal control system suboptimal system Suboptimal Trajectories switching points unstable wheel speed yaw and roll yaw control yaw equation Yaw Motion